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3 years ago

13

Students in Mrs. Walsh’s math class wanted to know the favorite snacks of students in the school. How could they generate a rand

om sample to survey?

1 answer:

frozen [14]3 years ago

6 0

Answer:

Step-by-step explanation:

Abajkavsowvsj some people who have never in the game and have a lot

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NISA [10]

For this case we must find the solution of the following quadratic equation:

$x ^ 2 + 5x + 7 = 0$

Where:

$a = 1\\b = 5\\c = 7$

Then, the solution is given by:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

Substituting the values:

$x = \frac {-5 \pm \sqrt {5 ^ 2-4 (1) (7)}} {2 (1)}\\x = \frac {-5 \pm \sqrt {25-28}} {2}\\x = \frac {-5 \pm \sqrt {-3}} {2}$

By definition we have: $i ^ 2 = -1$

$x = \frac {-5 \pm \sqrt {3i ^ 2}} {2}\\x = \frac {-5 \pm i \sqrt {3}} {2}$

Thus, we have two complex roots.

Answer:

The equation has no real roots.

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3 years ago

Helppp<br> Meeeeeeeeeeee

Katena32 [7]

B it’s b bro trust me

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3 years ago

Pen has 1/2- cup and 1/8- cup measuring cups. What are two ways he could measure 1 3/4 cups of flour?

astraxan [27]

<span>You can get two half cups and then two eighth cups OR you can get fourteen eighth cups</span>

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3 years ago

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Find the perimeter of the polygon.

Kaylis [27]

Answer:

I think it's 150

Step-by-step explanation:

(8+7) × 10 = 150

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3 years ago

5(r-10)=-51 what is the value of r

raketka [301]

Use distributive method
5r - 50 = -51
Add 50
5r = -1
Divide by 5
r = -1/5

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3 years ago

Read 2 more answers